As your coming into Frost on 667, they will be sitting at that intersection with radar, I believe they are clocking at the yellow 30 mph sign, which means the speed limit there is still 40 mph but she will say it is 30 right there its not 30 mph until you are almost right where she is sitting. Small town- Small town rules they have to get there percentage of their revenue from traffic citations, I seen her have at least 6 people after me getting citations within 2 hours. Watch out they were ordered to ticket everyone who speeds thru there, Frost needs the money.